From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>, Jacob Shin <jacob.shin@amd.com>,
"H. Peter Anvin" <hpa@linux.intel.com>,
"Yu, Fenghua" <fenghua.yu@intel.com>,
"mingo@kernel.org" <mingo@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"linux-tip-commits@vger.kernel.org"
<linux-tip-commits@vger.kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Subject: Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early update ucode on Intel's CPU
Date: Wed, 19 Dec 2012 15:43:36 -0800 [thread overview]
Message-ID: <50D25128.7030205@zytor.com> (raw)
In-Reply-To: <CAE9FiQWuC+34=q1K5oj8j+U1XjbXPDz5k1VKvs4vnoZDAzFzRg@mail.gmail.com>
On 12/19/2012 03:40 PM, Yinghai Lu wrote:
> On Wed, Dec 19, 2012 at 3:22 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>> The other bit is that building the real kernel page tables iteratively
>> (ignoring the early page tables here) is safer, since the real page
>> table builder is fully aware of the memory map. This means any
>> "spillover" from the early page tables gets minimized to regions where
>> there are data objects that have to be accessed early. Since Yinghai
>> already had iterative page table building working, I don't see any
>> reason to not use that capability.
>
> that is v6, right?
>
> including that patch
>
No, that's just a different way to create the early page tables (and it
doesn't solve anything, quite on the contrary.) I'm talking about the
strategy for creating the *permanent* page tables
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2012-12-19 23:44 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-30 1:47 [PATCH v2 00/11] x86/microcode: Early load microcode Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 01/10] Documentation/x86: " Fenghua Yu
2012-11-30 19:46 ` H. Peter Anvin
2012-11-30 20:40 ` Yu, Fenghua
2012-11-30 1:47 ` [PATCH v2 02/10] x86/microcode_intel.h: Define functions and macros for early loading ucode Fenghua Yu
2012-12-01 0:21 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 03/10] x86/microcode_core_early.c: Define interfaces " Fenghua Yu
2012-12-01 0:23 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 04/10] x86/microcode_intel_lib.c: Early update ucode on Intel's CPU Fenghua Yu
2012-12-01 0:24 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 05/10] x86/microcode_intel_early.c: " Fenghua Yu
2012-12-01 0:25 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-12-01 0:55 ` Yinghai Lu
2012-12-04 0:18 ` Yu, Fenghua
2012-12-11 2:39 ` Yinghai Lu
2012-12-11 3:41 ` H. Peter Anvin
2012-12-11 3:55 ` Yinghai Lu
2012-12-11 6:34 ` H. Peter Anvin
2012-12-11 7:07 ` Yinghai Lu
2012-12-11 14:57 ` Borislav Petkov
2012-12-11 16:46 ` Yinghai Lu
2012-12-11 16:48 ` H. Peter Anvin
2012-12-11 17:00 ` Yinghai Lu
2012-12-11 17:06 ` Borislav Petkov
2012-12-11 17:15 ` Yinghai Lu
2012-12-11 17:26 ` Yu, Fenghua
2012-12-11 17:38 ` H. Peter Anvin
2012-12-11 23:53 ` Yinghai Lu
2012-12-11 23:57 ` H. Peter Anvin
2012-12-12 0:27 ` Yinghai Lu
2012-12-12 0:37 ` H. Peter Anvin
2012-12-12 7:14 ` Yinghai Lu
2012-12-12 10:26 ` Yinghai Lu
2012-12-13 1:06 ` Yinghai Lu
2012-12-12 6:57 ` H. Peter Anvin
2012-12-12 13:38 ` Borislav Petkov
2012-12-12 17:43 ` H. Peter Anvin
2012-12-13 5:12 ` H. Peter Anvin
2012-12-13 5:26 ` H. Peter Anvin
2012-12-13 7:01 ` Yinghai Lu
2012-12-13 15:01 ` H. Peter Anvin
2012-12-13 19:13 ` Borislav Petkov
2012-12-13 21:36 ` H. Peter Anvin
2012-12-14 9:11 ` Yinghai Lu
2012-12-14 18:16 ` H. Peter Anvin
2012-12-14 19:46 ` H. Peter Anvin
2012-12-14 20:04 ` Yinghai Lu
2012-12-14 20:08 ` Yinghai Lu
2012-12-14 20:14 ` Yinghai Lu
2012-12-14 20:44 ` H. Peter Anvin
2012-12-15 7:57 ` Yinghai Lu
2012-12-15 19:30 ` H. Peter Anvin
2012-12-15 20:55 ` Yinghai Lu
2012-12-15 21:31 ` H. Peter Anvin
2012-12-15 21:40 ` H. Peter Anvin
2012-12-15 22:13 ` Yinghai Lu
2012-12-15 22:17 ` H. Peter Anvin
2012-12-15 23:15 ` Yinghai Lu
2012-12-15 23:17 ` H. Peter Anvin
2012-12-19 20:37 ` Borislav Petkov
2012-12-19 21:07 ` Jacob Shin
2012-12-19 21:48 ` H. Peter Anvin
2012-12-19 22:05 ` Jacob Shin
2012-12-19 22:25 ` H. Peter Anvin
2012-12-19 22:47 ` Yinghai Lu
2012-12-19 22:59 ` H. Peter Anvin
2012-12-19 22:51 ` Borislav Petkov
2012-12-19 22:59 ` Jacob Shin
2012-12-19 23:03 ` Borislav Petkov
2012-12-19 23:21 ` Jacob Shin
2012-12-19 23:56 ` H. Peter Anvin
2012-12-19 23:22 ` H. Peter Anvin
2012-12-19 23:40 ` Borislav Petkov
2012-12-20 0:02 ` H. Peter Anvin
2012-12-20 0:10 ` Borislav Petkov
2012-12-20 0:15 ` H. Peter Anvin
2012-12-19 23:40 ` Yinghai Lu
2012-12-19 23:43 ` H. Peter Anvin [this message]
2012-12-19 23:48 ` Yinghai Lu
2012-12-19 23:40 ` Jacob Shin
2012-12-19 23:45 ` Yinghai Lu
2012-12-19 23:50 ` H. Peter Anvin
2012-12-19 23:55 ` Borislav Petkov
2012-12-19 23:57 ` H. Peter Anvin
2012-12-20 0:07 ` Jacob Shin
2012-12-20 0:24 ` H. Peter Anvin
2012-12-20 0:29 ` Jacob Shin
2012-12-20 0:41 ` H. Peter Anvin
2012-12-20 2:37 ` H. Peter Anvin
2012-12-20 4:16 ` Jacob Shin
2012-12-20 4:21 ` H. Peter Anvin
2012-12-19 22:55 ` Jacob Shin
2012-12-19 23:00 ` Borislav Petkov
2012-12-19 23:17 ` H. Peter Anvin
2012-12-19 23:30 ` Borislav Petkov
2012-12-19 23:37 ` H. Peter Anvin
2012-12-19 23:23 ` H. Peter Anvin
2012-12-16 2:09 ` Yinghai Lu
2012-12-16 5:17 ` Yinghai Lu
2012-12-16 8:50 ` Yinghai Lu
2012-12-17 22:47 ` Yinghai Lu
2012-12-17 23:11 ` H. Peter Anvin
2012-12-17 23:26 ` Yinghai Lu
2012-12-18 1:11 ` Yinghai Lu
2012-12-18 1:51 ` Yinghai Lu
2012-12-18 2:42 ` Yinghai Lu
2012-12-14 20:10 ` H. Peter Anvin
2012-12-14 20:17 ` Yinghai Lu
2012-12-14 20:52 ` H. Peter Anvin
2012-12-14 21:07 ` Yinghai Lu
2012-12-11 18:02 ` H. Peter Anvin
2012-12-11 18:20 ` H. Peter Anvin
2012-12-11 18:42 ` Yinghai Lu
2012-12-11 18:46 ` H. Peter Anvin
2012-12-11 19:18 ` Yinghai Lu
2012-12-11 19:33 ` H. Peter Anvin
2012-11-30 1:47 ` [PATCH v2 06/10] x86/head_32.S: Early update ucode in 32-bit Fenghua Yu
2012-12-01 0:26 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 07/10] x86/head64.c: Early update ucode in 64-bit Fenghua Yu
2012-12-01 0:27 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 08/10] x86/smpboot.c: Early update ucode on AP Fenghua Yu
2012-12-01 0:28 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 09/10] x86/mm/init.c: Copy ucode from initrd image to memory Fenghua Yu
2012-12-01 0:29 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
2012-11-30 1:47 ` [PATCH v2 10/10] x86/Kconfig: Configurations to enable/disable the feature Fenghua Yu
2012-12-01 0:30 ` [tip:x86/microcode] x86/Kconfig: Configurations to enable/ disable " tip-bot for Fenghua Yu
-- strict thread matches above, loose matches on Subject: below --
2012-12-21 7:44 [PATCH v5 08/12] x86/microcode_intel_early.c: Early update ucode on Intel's CPU Fenghua Yu
2013-01-31 22:33 ` [tip:x86/microcode] " tip-bot for Fenghua Yu
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